Some of the world' most impressive cicadas belong in the small South East Asian Genus Tosena and the closely allied Tacua. I am not just talking colour and pattern here. These are some of the world's largest cicadas reaching wingspans up to 200mm. The coloration and pattern appear to be warning colours indicating distastefulness to predators. The loud-calling male Tosena species give short bursts to avoid predators homing in on their song